Physiological saline solution containing GRAPHENE- recommended by Spanish government

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⁣https://wwwoepmes/export/sites/oepm/comun/documentos_relacionados/Boletines/Coronavirus/BVT-CORONAVIRUS-numero-4pdf



https://worldwideespacenetcom/patent/search/family/075143365/publication/KR20210028062A?q=pn=KR20210028062A%3F